You're right too, Kadri.
I tried to lower input sensitivity via shown options in the manual with that device but they had no effect.
I am quite sure. that clipping together with the (necessary) increasing of the play speed causes that weird and bad sound.
Additionally there's a slight room hall especially disturbing at low frequencies, I couldn't get rid of.
I tried to compensate with some filters but playing around with filters for days isn't my favorite way if I can set up a small recording studio.... wow - right now I remember I have still an almost new Behringer 16 channel mixer from my time as hobbymusician... somewhere...
The other funny thing is - I have several of these headphone mics too, but in the meantime, the number of my render PCs has risen and the whole room is full of NAS drives.
In comparison, it would be even quieter on the Enterprise right next to the Warp drive @ warp 7.9.
I personally don't mind and I don't feel disturbed by that noise at all, but mic recordings are incredibly noisy.
Because I was too lazy to set up a recording room so far I just wanted to try if the recorder works good enough.
I'll probably dig around in some old moving boxes ... It's going to be fun!